ok here is where im at...so far i have installed a cat replacement pipe, removed the air tube that went to the cat, and removed the belt from the air pump. first off, the rubber hose that goes from the back of the intake area down to the metal tube that goes to the cat...do i need to plug that hose(its the one thats about an inch in diamater. 2nd question...has anyone experianced large amounts of white smoke when they have done this, and what is causing it?


thanks

 

you may have searched, but clicked the submit buttom 2 many times.

 

yea the page kept freezing...ive requested that the other be deleted

 

Your profile says you have an FD. You're posting this in the 2nd gen section. Perhaps you'd like to request that this question be moved.

 

no this is one a second gen...s4 n/a to be exact

 

need to figure out why this beast is smoking so bad...someone please help.

 

need to figure out why this beast is smoking so bad...someone please help.

 

I just gutted my cat, but didn't remove the pump or the air hose leading to the "cat". Mine just smelled funny, but no smoke.


Was the pipe painted in some way?

gil

 

no, its been used before so there is no paint to burn, the smoke is coming out of the tailpipe

 

mines did that for a while also and the smell was horrible. oh well well i put back the air pump and belt. put a small filter on the hose that went to the stock airbox. then welded to small air pipe directly ahead of the gutted cat to get clean air in there lol. then my white smoke was gone and a little of the bad smell along with it, still i cant drive with just my moonroof open,. unless i want to pass out lol

 

so is the white smoke coming from the air tube not being hooked up to the new cat replacement pipe? if so then i guess i could weld a bung on there somewhere and hook that air tube back up, and i assume that means i would have to hook the air pump back up as well. someone please chime in on if i have that right, or if there is some other way to stop this white smoke from practically pouring out at each rev.

 

white smoke coming from your exhaust?

 

yes

 

well i cant really say that is the issue resolver, but all rx's have their own demons lol. so happens that mines was all good after i did that welding of the pipe just a little past the cat.

 

im sure plenty of people have put ina replacement pipe, has anyone experianced this?

 

i replaced a str8 pipe on mine, and the white smoke increased, then went away, now it does it only when its cold and i rev it to 4k rpm, but thats caused by oil control bearings or something along those lines, but having the cat on reduced the smoke so that i didnt know i had this problem before . just forget about it, unless its really that terrible, and yea i just cut the air feed pipe to the cat and left it hanging, air pump is still on, so maybe its something to do with your acv valve, any one concur?

 

so in that case, if it was the acv valve, would i want to remove it? if so, does anyone know the process of doing this removal?

 

oil control bearings??? LOL

no commment

I've replaced the cat with a straight pipe, with a pre-silencer, and now with a ultra high flow (as in empty) main cat. None of this caused white smoke. If I temporarily remove the air pump (which I did last week while changing the E-OMP), I don't get white smoke either. That being the case, I don't think it's the air pump or the cat replacement pipe.

You may wish to consider putting the air pump back on and checking to see if that makes a difference.

oil control bearings??? LOL

 

well i put the belt back on the air pump, and the hose from the intake to the air pump, and left the air tube that used to go to the cat plugged, and no more smoke. so taking this info, what am i doing wrong, or not doing at all when i remove the air pump belt?